US10233878B2 - Method and apparatus for controlling quantity of suction air - Google Patents

Method and apparatus for controlling quantity of suction air Download PDF

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US10233878B2
US10233878B2 US15/371,050 US201615371050A US10233878B2 US 10233878 B2 US10233878 B2 US 10233878B2 US 201615371050 A US201615371050 A US 201615371050A US 10233878 B2 US10233878 B2 US 10233878B2
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vcm
flap
voltage
closing
per unit
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US20180038292A1 (en
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Seung-Bum Kim
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Hyundai Motor Co
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Hyundai Motor Co
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255—Arrangements of valves; Multi-way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
    • F02B27/0268—Valves
    • F02B27/0273—Flap valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • F02B31/06—Movable means, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10373—Sensors for intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D2041/0015—Controlling intake air for engines with means for controlling swirl or tumble flow, e.g. by using swirl valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relate to a method and an apparatus for controlling a position of a flap of a variable port flap control module (VCM), and more particularly, to a method and an apparatus for controlling a position of a flap of a VCM that control the flap of the VCM to be opened or closed at an optimal position.
  • VCM variable port flap control module
  • a variable port flap control module is an apparatus that generates a tumble in intake air in an engine to promote mixing of air and fuel in a combustion chamber, such that combustion efficiency of the engine is increased, thereby improving fuel efficiency.
  • the VCM is generally installed at an intake manifold. Describing in more detail, a flap is installed at a position adjacent to a portion of the engine where the intake manifold is mounted. Further, an actuator such as a motor is connected via a link or a gear to rotate the flap.
  • the flap In order to more easily control the tumble generated in the combustion chamber, it is preferable for the flap to be installed as near as possible to the combustion engine. Therefore, the flap is installed adjacent to the portion of the engine where the intake manifold is mounted, however, since a position adjacent to the engine is interfered by other parts or is a small space, the actuator such as a motor is mounted at a position spaced apart from the flap. Further, the actuator and the flap should be connected to each other via the link or the gear as described above in order to deliver an operating force of the actuator to the flap.
  • a position corresponding to a target value or more is controlled to maintain a state in which the flap is completely opened or closed, even when an error due to heat damage to or assembly deviation of components occurs. That is, it is controlled to additionally apply an offset voltage to the motor. This is because when tolerance occurs in the flap due to heat damage to or assembly deviation of components, knocking or misfire occurs, causing power loss and finally decreasing fuel efficiency.
  • the voltage offset voltage
  • the link or the gear connecting between the motor and the flap is damaged.
  • Various aspects of the present invention are directed to providing a method and an apparatus for controlling a position of a flap of a variable port flap control module (VCM) that control the flap of the VCM to be opened or closed at an optimal position by controlling a voltage applied to a motor of a VCM.
  • VCM variable port flap control module
  • a method for controlling a position of a flap of a variable port flap control module includes: determining whether a vehicle state satisfies a predetermined opening condition of the VCM 200 (S 110 ); determining whether a vehicle state satisfies a closing condition of the VCM 200 (S 120 ); determining a VCM opening voltage B 1 in consideration of tolerance of the flap 210 of the VCM 200 when the vehicle state satisfies the opening condition of the VCM 200 (S 200 ); and controlling the flap 210 of the VCM 200 to be in an opened state by applying the VCM opening voltage B 1 to a motor 220 of the VCM 200 when the opening condition of the VCM 200 is satisfied, during an engine starts (S 300 ).
  • the method may further include determining a VCM closing voltage B 2 in consideration of tolerance of the flap of the VCM (S 400 ) when the closing condition of the VCM is satisfied (S 120 ).
  • the method may further include controlling the flap 210 of the VCM 200 to be in a closed state by applying the VCM closing voltage B 2 to the motor 220 of the VCM 200 when the closing condition of the VCM is satisfied, until the engine stops (S 500 ).
  • the determining of the VCM opening voltage B 1 may include applying the VCM opening voltage B′ determined from the sum of a predetermined VCM open position voltage V 1 and a predetermined opening offset voltage A′ to the motor 220 (S 210 ).
  • the determining of the VCM opening voltage B 1 may further include, after the applying of the VCM opening voltage B 1 to the motor 220 (S 210 ), determining whether a position variation of the flap 210 per unit time is 0 (S 220 ).
  • the determining of the VCM opening voltage B 1 may further include determining whether the position variation of the flap 210 per unit time is less than 0, when the position variation of the flap 210 per unit time is not 0 (S 230 ).
  • the controlling (S 300 ) may be performed.
  • the method may further include outputting a VCM fault code when the position variation of the flap 210 per unit time is greater than 0 (S 600 ).
  • the determining of the VCM opening voltage B 1 may further include decreasing a value of the predetermined opening offset voltage A 1 by a predetermined opening offset variation Z 1 when the position variation of the flap 210 per unit time is 0 (S 240 ).
  • the determining (S 100 ) may be again performed.
  • the determining of the VCM closing voltage B 2 may include applying the VCM closing voltage B 2 determined from the sum of a predetermined VCM close position voltage V 2 and a predetermined closing offset voltage A 2 to the motor 220 (S 410 ).
  • the determining of the VCM closing voltage B 2 may further include, after the applying of the VCM closing voltage B 2 to the motor 220 (S 410 ), determining whether a position variation of the flap 210 per unit time is 0 (S 420 ).
  • the determining of the VCM closing voltage B 2 may further include determining whether the position variation of the flap 210 per unit time is greater than 0, when the position variation of the flap 210 per unit time is not 0 (S 430 ).
  • the controlling (S 500 ) may be performed.
  • the outputting of the VCM fault code (S 600 ) may be performed.
  • the determining of the VCM closing voltage B 2 may further include decreasing a value of the predetermined closing offset voltage A 2 by a predetermined closing offset variation Z 2 when the position variation of the flap 210 per unit time is 0 (S 440 ).
  • the determining (S 100 ) may be again performed.
  • an apparatus for controlling a position of a flap of a VCM includes: a storage medium 100 storing the method for controlling a position of a flap of a VCM; the VCM 200 including the flap 210 opening or closing a port of an intake manifold and a motor 220 rotating the flap; a position sensor 300 detecting a position of the flap; a battery 400 applying a voltage to the motor 220 ; and a controller 500 controlling the position of the flap 210 by controlling the voltage applied to the motor 220 from the battery 400 according to the method for controlling a position of a flap of a VCM that is stored in the storage medium 100 , based on the position of the flap 210 detected by the position sensor 300 , in which the controller 500 determines a VCM opening voltage B 1 in consideration of tolerance of the flap 210 of the VCM 200 when a vehicle state satisfies a predetermined opening condition of the VCM 200 , and controls the flap 210 of the VCM 200 to be in an
  • the controller 500 may determine a VCM closing voltage B 2 in consideration of tolerance of the flap 210 of the VCM 200 when a vehicle state satisfies a predetermined closing condition of the VCM 200 , and control the flap 210 of the VCM 200 to be in a closed state by applying the VCM closing voltage B 2 to the motor 220 of the VCM 200 when a position variation of the flap 210 per unit time is greater than 0.
  • FIG. 1 is flow chart of a method for controlling a position of a flap of a VCM according to an exemplary embodiment of the present invention.
  • FIG. 2 is a block diagram of an apparatus for controlling a position of a flap of a VCM according to an exemplary embodiment of the present invention.
  • FIG. 1 is flow chart of a method for controlling a position of a flap of a VCM according to an exemplary embodiment of the present invention.
  • a method for controlling a position of a flap of a variable port flap control module (VCM) includes determining whether a vehicle state satisfies a predetermined opening condition of the VCM 200 (S 110 ), determining whether a vehicle state satisfies a closing condition of the VCM 200 (S 120 ), determining a VCM opening voltage B 1 (S 200 ), controlling a flap 210 of the VCM 200 to be in an opened state (S 300 ), determining a VCM closing voltage B 2 (S 400 ), controlling the flap 210 of the VCM 200 to be in a closed state (S 500 ), and outputting a VCM fault code (S 600 ).
  • the predetermined opening condition is a condition that a tumble is generated in intake air in an engine to promote mixing of air and fuel in a combustion chamber, such that combustion efficiency of the engine is increased, improving fuel efficiency, which may be variously set depending on an intention of a designer.
  • the VCM opening voltage B 1 is determined in consideration of tolerance of the flap 210 of the VCM 200 .
  • a detailed description for the determining of the VCM opening voltage B 1 (S 200 ) will be provided below.
  • the VCM opening voltage B 1 is applied to a motor 220 of the VCM 200 to control the flap 210 of the VCM 200 to be in the opened state. That is, the VCM opening voltage B 1 determined in the determining of the VCM opening voltage B 1 (S 200 ) is a voltage controlling the flap of the VCM to be opened at the optimal position.
  • the VCM opening voltage B 1 is applied to a motor 220 of the VCM 200 to control the flap 210 of the VCM 200 to be in the opened state. Accordingly, even though the flap 210 may not rotate any more by a stopper P, excessive offset voltage is not applied to the motor 220 , preventing a gear G, or the like from being damaged. Further, even when an open position of the flap 210 is changed due to durability deterioration, the changed position may be reflected, preventing fuel efficiency from being decreased due to durability deterioration of related components.
  • the VCM closing voltage B 2 is determined in consideration of the tolerance of the flap of the VCM. A detailed description for the determining of the VCM closing voltage B 2 (S 400 ) will be provided below.
  • the VCM closing voltage B 2 is applied to the motor 220 of the VCM 200 to control the flap 210 of the VCM 200 to be in the closed state. That is, the VCM closing voltage B 2 determined in the determining of the VCM closing voltage B 2 (S 400 ) is a voltage controlling the flap of the VCM to be closed at the optimal position.
  • the VCM closing voltage B 2 is applied to the motor 220 of the VCM 200 to control the flap 210 of the VCM 200 to be in the closed state. Accordingly, even though the flap 210 may not rotate any more by the stopper P, excessive offset voltage is not applied to the motor 220 , preventing the gear G, or the like from being damaged. Further, even when a close position of the flap 210 is changed due to durability deterioration, the changed position may be reflected, preventing fuel efficiency from being decreased due to durability deterioration of related components.
  • the determining of the VCM opening voltage B 1 first includes applying the VCM opening voltage B 1 determined from the sum of a predetermined VCM open position voltage V 1 and a predetermined opening offset voltage A 1 to the motor 220 (S 210 ). That is, an initial VCM opening voltage B 1 is set as the sum of the VCM open position voltage V 1 and the predetermined opening offset voltage A 1 .
  • the predetermined VCM open position voltage V 1 is a voltage applied to the motor 220 to rotate the flap 210 to the open position, which may be set to be different depending on a shape of the flap 210 or a size of the motor 220 .
  • the flap 210 may rotate to the open position (that is, a position where the flap 210 contacts the stopper S) only with the predetermined VCM open position voltage V 1 , however, when an error occurs due to heat damage or assembly deviation of components, the flap 210 may not rotate up to the open position. Therefore, to prevent this situation, the predetermined opening offset voltage A 1 is set.
  • the predetermined opening offset voltage A 1 is applied to the motor 220 to rotate the flap 210 more over the open position (that is, the position where the flap 210 contacts the stopper S). By doing so, the flap 210 rotates up to a complete open position.
  • the predetermined opening offset voltage A 1 may be set to be 0.4 V, but is not necessarily limited thereto, and may also be set to be different depending on the shape of the flap 210 or the size of the motor 220 .
  • the determining of the VCM opening voltage B 1 includes, after the applying of the VCM opening voltage B 1 to the motor 220 (S 210 ), determining whether a position variation of the flap 210 per unit time is 0 (S 220 ). When the position variation of the flap 210 per unit time is 0, it means that the flap 210 reaches the position where the flap 210 contacts the stopper S, thus it may be determined that the flap 210 rotates up to the complete open position.
  • a voltage variation of the VCM per unit time is relevant to the position variation of the flap 210 per unit time, when the voltage variation of the VCM per unit time is 0, it means that the flap 210 reaches the position where the flap 210 contacts the stopper S, thus it may be determined that the flap 210 rotates up to the complete open position.
  • the initial VCM opening voltage B 1 that is the sum of the VCM open position voltage V 1 and the predetermined opening offset voltage A 1 is sufficiently large, and it is determined that the flap 210 may rotate up to the complete open position even when the VCM opening voltage B 1 is gradually decreased.
  • the determining of the VCM opening voltage B 1 includes determining whether the position variation of the flap 210 per unit time is less than 0 when the position variation of the flap 210 per unit time is not 0 (S 230 ). That is, as described above, when the position variation of the flap 210 per unit time is 0, it means that the flap 210 rotates up to the complete open position, and when the position variation of the flap 210 per unit time is not 0, it means that a fault of the VCM 200 occurs or the flap 210 rotates up to immediately before reaching the complete open position. Also, when the voltage variation of the VCM per unit time is not 0, it means that a fault of the VCM 200 occurs or the flap 210 rotates up to immediately before reaching the complete open position.
  • the flap 210 contacts the stopper S, and thus may not rotate more over the complete open position.
  • the position variation of the flap 210 per unit time is greater than 0, it means that a fault of the VCM 200 or a position sensor 300 occurs. Therefore, when the position variation of the flap 210 per unit time is greater than 0, the outputting of the VCM fault code (S 600 ) is performed.
  • the flap 210 rotates up to immediately before reaching the complete open position as described above. Therefore, it may be determined that the VCM opening voltage B 1 at this time is an optimal voltage for rotating the flap 210 to the complete open position. Accordingly, when the position variation of the flap 210 per unit time is less than 0, the controlling (S 300 ) is performed.
  • the determining of the VCM opening voltage B 1 includes decreasing a value of the predetermined opening offset voltage A 1 by a predetermined opening offset variation Z 1 when the position variation of the flap 210 per unit time is 0 (S 240 ).
  • the position variation of the flap 210 per unit time is 0, it means that the flap 210 reaches the position where the flap 210 contacts the stopper S, thus it may be determined that the flap 210 rotates up to the complete open position. Therefore, it may be confirmed that the initial VCM opening voltage B 1 that is the sum of the VCM open position voltage V 1 and the predetermined opening offset voltage A 1 is sufficiently large.
  • an optimal voltage for rotating the flap 210 to the complete open position may be derived while gradually decreasing the VCM opening voltage B 1 , and To this end, after the decreasing (S 240 ), the determining (S 100 ) may be performed again.
  • the predetermined opening offset variation Z 1 may be set to be 0.01 V, but is not necessarily limited thereto, and may be set to be different depending on the intention of the designer. That is, when the predetermined opening offset variation Z 1 is set to be large, the optimal voltage may be derived more quickly, and when the predetermined opening offset variation Z 1 is set to be small, the optimal voltage may be more accurately derived.
  • the determining of the VCM closing voltage B 2 first includes applying the VCM closing voltage B 2 determined from the sum of a predetermined VCM close position voltage V 2 and a predetermined closing offset voltage A 2 to the motor 220 (S 410 ). That is, an initial VCM closing voltage B 2 is set as the sum of the predetermined VCM close position voltage V 2 and the predetermined closing offset voltage A 2 .
  • the predetermined VCM close position voltage V 2 is a voltage applied to the motor 220 to rotate the flap 210 to the close position, which may be set to be different depending on a shape of the flap 210 or a size of the motor 220 .
  • the flap 210 may rotate to the close position (that is, the position where the flap 210 contacts the stopper S) only with the predetermined VCM close position voltage V 2 , however, when an error occurs due to heat damage or assembly deviation of components, the flap 210 may not rotate up to the close position. Therefore, to prevent this situation, the predetermined closing offset voltage A 2 is set.
  • the predetermined closing offset voltage A 2 is applied to the motor 220 to rotate the flap 210 more over the close position (that is, the position where the flap 210 contacts the stopper S). By doing so, the flap 210 rotates up to a complete close position.
  • the predetermined closing offset voltage A 2 may be set to be 0.4 V, but is not necessarily limited thereto, and may also be set to be different depending on the shape of the flap 210 or the size of the motor 220 .
  • the determining of the VCM closing voltage B 2 includes, after the applying of the VCM closing voltage B 2 to the motor 220 (S 410 ), determining whether a position variation of the flap 210 per unit time is 0 (S 420 ). When the position variation of the flap 210 per unit time is 0, it means that the flap 210 reaches the position where the flap 210 contacts the stopper S, thus it may be determined that the flap 210 rotates up to the complete close position.
  • a voltage variation of the VCM per unit time is relevant to the position variation of the flap 210 per unit time, when the voltage variation of the VCM per unit time is 0, it means that the flap 210 reaches the position where the flap 210 contacts the stopper S, thus it may be determined that the flap 210 rotates up to the complete close position.
  • the initial VCM closing voltage B 2 that is the sum of the VCM close position voltage V 2 and the predetermined closing offset voltage A 2 is sufficiently large, and it is determined that the flap 210 may rotate up to the complete close position even when the VCM closing voltage B 2 is gradually decreased.
  • the determining of the VCM closing voltage B 2 includes determining whether the position variation of the flap 210 per unit time is less than 0 when the position variation of the flap 210 per unit time is not 0 (S 430 ). That is, as described above, when the position variation of the flap 210 per unit time is 0, it means that the flap 210 rotates up to the complete close position, and when the position variation of the flap 210 per unit time is not 0, it means that a fault of the VCM 200 occurs or the flap 210 rotates up to immediately before reaching the complete close position. Also, when the voltage variation of the VCM per unit time is not 0, it means that a fault of the VCM 200 occurs or the flap 210 rotates up to immediately before reaching the complete close position.
  • the flap 210 contacts the stopper S, and may not rotate more over the complete close position. In spite of this, when the position variation of the flap 210 per unit time is more than 0, it means that a fault of the VCM 200 or the position sensor 300 occurs. Therefore, when the position variation of the flap 210 per unit time is greater than 0, the outputting of the VCM fault code (S 600 ) is performed.
  • the flap 210 rotates up to immediately before reaching the complete close position as described above. Therefore, it may be determined that the VCM closing voltage B 2 at this time is an optimal voltage for rotating the flap 210 to the complete close position. Accordingly, when the position variation of the flap 210 per unit time is less than 0, the controlling (S 500 ) is performed.
  • the determining of the VCM closing voltage B 2 includes decreasing a value of the predetermined closing offset voltage A 2 by a predetermined closing offset variation Z 2 when the position variation of the flap 210 per unit time is 0 (S 440 ).
  • the position variation of the flap 210 per unit time is 0, it means that the flap 210 reaches the position where the flap 210 contacts the stopper S, thus it may be determined that the flap 210 rotates up to the complete close position. Therefore, it may be confirmed that the initial VCM closing voltage B 2 that is the sum of the VCM close position voltage V 2 and the predetermined closing offset voltage A 2 is sufficiently large.
  • an optimal voltage for rotating the flap 210 to the complete close position may be derived while gradually decreasing the VCM closing voltage B 2 , and To this end, after the decreasing (S 440 ), the determining (S 100 ) may be performed again.
  • the predetermined closing offset variation Z 2 may be set to be 0.01 V, but is not necessarily limited thereto, and may be set to be different depending on the intention of the designer. That is, when the predetermined closing offset variation Z 2 is set to be large, the optimal voltage may be derived more quickly, and when the predetermined closing offset variation Z 2 is set to be small, the optimal voltage may be more accurately derived.
  • FIG. 2 is a block diagram of an apparatus for controlling a position of a flap of a VCM according to an exemplary embodiment of the present invention.
  • an apparatus for controlling a position of a flap of a VCM according to an exemplary embodiment of the present invention includes a storage medium 100 , a VCM 200 , a position sensor 300 , a battery 400 , and a controller 500 .
  • the storage medium 100 stores the method for controlling a position of a flap of a VCM.
  • the VCM 200 includes a flap 210 opening or closing a port P of an intake manifold and a motor 220 rotating the flap 210 . Further, the VCM 200 may include a gear G connecting between the motor 220 and the flap 210 , and a stopper S mounted at the port P to physically limit a close position of the flap 210 .
  • the position sensor 300 serves to sense a position of the flap 210 , and the battery 400 serves to apply a voltage to the motor 220 .
  • the controller 500 serves to control the position of the flap 210 by controlling the voltage applied to the motor 220 from the battery 400 according to the method for controlling a position of a VCM flap that is stored in the storage medium 100 , based on the position of the flap 210 detected by the position sensor 300 .
  • the controller 500 may determine a VCM opening voltage B 1 in consideration of tolerance of the flap 210 of the VCM 200 when a vehicle state satisfies a predetermined opening condition of the VCM 200 , and control the flap 210 of the VCM 200 to be in an opened state by applying the VCM opening voltage B 1 to the motor 220 of the VCM 200 when a position variation of the flap 210 per unit time is less than 0.
  • the controller 500 may determine a VCM closing voltage B 2 in consideration of tolerance of the flap 210 of the VCM 200 when a vehicle state satisfies a predetermined closing condition of the VCM 200 , and control the flap 210 of the VCM 200 to be in a closed state by applying the VCM closing voltage B 1 to the motor 220 of the VCM 200 when a position variation of the flap 210 per unit time is greater than 0.
  • the flap of the VCM may be controlled to be opened or closed at an optimal position, preventing the gear or the like from being damaged.
  • the changed position may be reflected, preventing fuel efficiency from being decreased due to durability deterioration of related components.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Transportation (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
US15/371,050 2016-08-02 2016-12-06 Method and apparatus for controlling quantity of suction air Active 2037-03-19 US10233878B2 (en)

Applications Claiming Priority (2)

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KR10-2016-0098588 2016-08-02
KR1020160098588A KR101866044B1 (ko) 2016-08-02 2016-08-02 Vcm 플랩의 위치제어방법 및 장치

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CN107676183B (zh) 2021-12-21
KR101866044B1 (ko) 2018-06-08
CN107676183A (zh) 2018-02-09
US20180038292A1 (en) 2018-02-08

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